Amplitude change exercise
You can slightly change the muscular emphasis if you slightly raise your feet. Then the angle that forms between the floor and the torso will be approximately the same as with push-ups on an inclined bench. The main load will be on the pectoral muscles.
You can further complicate the exercise and put your hands on a slight elevation, for example, on a couple of books. The intensity of the exercise should be as high as possible.
Note:
Johann Schneider, who lives in Australia, did 112 push-ups while standing on raw chicken eggs. After that, many tried to beat his record, but no one managed to stand for so long with an emphasis on raw eggs so that they would not burst.